High memory usage on short session + heapdump fails on Windows

Environment

• Claude Code 2.1.74
• Node v25.8.0
• Windows 11 Pro 10.0.26200
• OneDrive disabled

Issue 1 — Memory leak

Memory usage climbs rapidly on a short, simple conversation. Hit 3.9GB within minutes, continued climbing to 4.2GB+ with no large file reads or complex operations.

Issue 2 — Heapdump broken on Windows

/heapdump fails with:

Failed to create heap dump: EEXIST: file already exists, mkdir 'C:\Users\<user>\Desktop'

Desktop folder exists and registry User Shell Folders\Desktop is correctly set to C:\Users\<user>\Desktop. Appears the heapdump code is calling mkdir without recursive: true, causing it to fail when the directory already exists.